13.1. Database Failures
Database failures can be divided into two general categories: media failures and nonmedia failures.
Media failures, the more serious type, occur when a server hardware component fails and the contents of one or more disk files are either unreadable or corrupted. The DBA is solely responsible for recovering from this type of failure by restoring the unreadable or corrupted file from a tape or disk backup. The DBA can perform the recovery process using one of the tools described in this chapter.
media failure
A type of database failure where a server hardware component fails and the contents of one or more disk files are either unreadable or corrupted.
Nonmedia failures are all other types of failures, including the following: ...
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